Text To Speech 在 Android Studio 中无法正常工作

Question

我最近在 android 工作室使用语音识别和文本转语音创建了一个简单的项目，但问题是文本转语音在第一次启动应用程序时不会说给定的行但在此事件之后它工作得非常正常。就像我在下面的代码中启动应用程序时一样，我添加了欢迎用户的行，但 tts 不说话，然后当我按下识别按钮时，应用程序识别句子并且也正确说话。为什么会这样？这似乎很奇怪。我提供下面的代码，请检查它，如果我犯了一些错误，请尽快告诉我。

这是我的 Java 代码：

package com.maitreyastudio.ai;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;

import android.Manifest;
import android.annotation.SuppressLint;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.provider.Settings;
import android.speech.RecognitionListener;
import android.speech.RecognizerIntent;
import android.speech.SpeechRecognizer;
import android.speech.tts.TextToSpeech;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.GridLayout;
import android.widget.TextView;


import com.chaquo.python.PyObject;
import com.chaquo.python.Python;
import com.chaquo.python.android.AndroidPlatform;
import com.google.android.gms.location.FusedLocationProviderClient;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;

import org.w3c.dom.Text;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Locale;

import static android.Manifest.permission.ACCESS_FINE_LOCATION;
import static android.Manifest.permission.READ_EXTERNAL_STORAGE;
import static android.Manifest.permission.RECORD_AUDIO;
import static android.Manifest.permission.WRITE_EXTERNAL_STORAGE;


public class MainActivity extends AppCompatActivity {


    private Button btnRecognize;
    private SpeechRecognizer speechRecognizer;
    private TextToSpeech textToSpeech;
    private EditText ET_ShowRecognized;
    String locality;
    private Intent intent;
    private String ET_ShowRecognizedText;
    private String ProcessingText;
    private ArrayList voices;
    private FusedLocationProviderClient fusedLocationProviderClient;
    Geocoder geocoder;
    /*Python py;
    PyObject pyobj;
    PyObject obj;
    String currentDate;
    String currentTime;*/


    @SuppressLint({"SetTextI18n", "ClickableViewAccessibility", "MissingPermission"})
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ActivityCompat.requestPermissions(this, new String[]{RECORD_AUDIO, WRITE_EXTERNAL_STORAGE, READ_EXTERNAL_STORAGE, ACCESS_FINE_LOCATION}, PackageManager.PERMISSION_GRANTED);


        ET_ShowRecognized = findViewById(R.id.ET_ShowRecognized);
        btnRecognize = findViewById(R.id.btnRecognize);




        /*fusedLocationProviderClient.getLastLocation().addOnCompleteListener(new OnCompleteListener<Location>() {
            @Override
            public void onComplete(@NonNull Task<Location> task) {

                Location location = task.getResult();
                if(location != null){

                    geocoder = new Geocoder(MainActivity.this, Locale.getDefault());
                    try {

                        List<Address> address = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1);
                        locality = address.get(0).getLocality();

                    } catch (IOException e) {
                        ;
                    }

                }
            }
        });


        if(!Python.isStarted()){

            Python.start(new AndroidPlatform(this));

        }
        py = Python.getInstance();
        pyobj = py.getModule("WolframAlpha");
        obj = pyobj.callAttr("main", locality);*/


        textToSpeech = new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener() {
            @Override
            public void onInit(int i) {
                if (i == TextToSpeech.SUCCESS) {

                    textToSpeech.setLanguage(Locale.ENGLISH);


                }

            }
        });

        textToSpeech.speak("Hi you succesfully ran me.", TextToSpeech.QUEUE_FLUSH, null, null);


        //currentDate = new SimpleDateFormat("dd-MM-yyyy", Locale.getDefault()).format(new Date());
        //currentTime = new SimpleDateFormat("HH:mm:ss", Locale.getDefault()).format(new Date());
        //textToSpeech.speak("Hi! I am your personal assistant. Today date is something something ", TextToSpeech.QUEUE_FLUSH, null, null);
        //Speak("Today's weather forecast for the current location is " + obj.toString());


        intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);

        speechRecognizer = SpeechRecognizer.createSpeechRecognizer(this);
        speechRecognizer.setRecognitionListener(new RecognitionListener() {
            @Override
            public void onReadyForSpeech(Bundle bundle) {

            }

            @Override
            public void onBeginningOfSpeech() {

            }

            @Override
            public void onRmsChanged(float v) {

            }

            @Override
            public void onBufferReceived(byte[] bytes) {

            }

            @Override
            public void onEndOfSpeech() {

            }

            @Override
            public void onError(int i) {

            }

            @Override
            public void onResults(Bundle bundle) {
                ArrayList<String> mathches = bundle.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);

                if (mathches != null) {

                    ET_ShowRecognized.setText(mathches.get(0));
                    process();


                }
            }

            @Override
            public void onPartialResults(Bundle bundle) {

            }

            @Override
            public void onEvent(int i, Bundle bundle) {

            }
        });


        btnRecognize.setOnTouchListener(new View.OnTouchListener() {

            @Override
            public boolean onTouch(View view, MotionEvent motionEvent) {

                switch (motionEvent.getAction()) {

                    case MotionEvent.ACTION_UP:
                        speechRecognizer.stopListening();

                        break;

                    case MotionEvent.ACTION_DOWN:
                        ET_ShowRecognized.setText(null);
                        ET_ShowRecognized.setText("Listening...");
                        speechRecognizer.startListening(intent);
                        break;
                    default:
                        break;
                }

                return false;
            }
        });

        textToSpeech.speak("Hi! Seems good to meet you.", TextToSpeech.QUEUE_FLUSH, null, null);
    }

    public void process() {

        ProcessingText = ET_ShowRecognized.getText().toString().toLowerCase();

        switch (ProcessingText) {

            case ("hello"):
                textToSpeech.speak("Hello! Hope all is going fine.", TextToSpeech.QUEUE_FLUSH, null, null);
                break;

            case ("hi"):
                textToSpeech.speak("Hi! I hope all is well.", TextToSpeech.QUEUE_FLUSH, null, null);
                break;


            case ("what is your name"):
                textToSpeech.speak("My name is assistant.", TextToSpeech.QUEUE_FLUSH, null, null);
                break;


            case ("bye"):
                finish();
                System.exit(0);

            default:
                textToSpeech.speak(ProcessingText, TextToSpeech.QUEUE_FLUSH, null, null);
                break;
        }

    }

}

这是我的 XML 代码

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/btnRecognize"
        style="@style/Widget.AppCompat.Button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/recognize"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <EditText
        android:id="@+id/ET_ShowRecognized"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="textPersonName"
        android:hint="@string/you_will_see_recognized_text_here"
        app:layout_constraintBottom_toTopOf="@+id/btnRecognize"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

请尽快帮助我

谢谢

Answer 1

您可以尝试创建一个应用程序 class 并在其中初始化您的 textToSpeech 引擎，以便它在应用程序启动时开始初始化。

public class MyApp extends Application {
    private static MyApp instance = null;
    private TextToSpeech t1;

    public static MyApp getInstance() {
        return instance;
    }

    @Override
    public void onCreate() {
        super.onCreate();
        instance = this;

        t1 = new TextToSpeech(this, new TextToSpeech.OnInitListener() {
            @Override
            public void onInit(int i) {
                if (i == TextToSpeech.SUCCESS) {
                    
                }
            }
        });
    }

    public TextToSpeech getT1() {
        return t1;
    }
}

然后在 activity 中使用它。

Answer 2

之前不行的原因和DB377说的一样。这是因为 tts 的初始化是异步的，只有在该过程完成时才会调用 onInit。执行不一定会发生 line-by-line.

您可以按如下方式更改代码：

// THIS RUNS FIRST
textToSpeech = new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener() {

        // THIS RUNS THIRD!
        @Override
        public void onInit(int i) {
            if (i == TextToSpeech.SUCCESS) {

                textToSpeech.setLanguage(Locale.ENGLISH);

                // NEW LOCATION
                textToSpeech.speak("Hi you succesfully ran me.", TextToSpeech.QUEUE_FLUSH, null, null);


            }

        }
    });

    // OLD LOCATION (THIS RUNS SECOND)

Text To Speech 在 Android Studio 中无法正常工作

Text To Speech not working properly in Android Studio

java

android

android-studio

text-to-speech